Clutch.



No.'8l-5,010.- PATENTED MAR. 13, 1906.

G. W. GREENWOOD.

CLUTCH.

APPLICATION FILED MAY 27,1903.

4 SHEETS-SHEET 1.

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INo.'8l5,010. PATENTEDAMARJS, 1906.

. G. GREENWOOD.

01.111705. APPLICATION FILED MAY 27.1903.

4 SHEETSSHEET 2.

WW W w PATENTED MAR. 13, 1906., e. W. GREENWOOD.

GLUTGH. APPLICATION FILE'D mnzueog 4 SHEHTSSEBBT a.

IN VE N70 i PATENTED MAR. 13, 1906 v G. w. GREENWOOD.

v CLUTCH. 4 APPLIOAIION FILED MAY 27.1903

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Specification of Letters Patent. Application filed May 27,19,03- Serial No. 158,934..

Patented March 13,1906;

Toall whom, it may concern/.

'Be it known that. I, GEORGE W. GREEN- WOOD, a citizen of the United States of America, residing at Cleveland, in the county of I 5-Cuyahoga andState of Ohio, have invented certain new and useful Improvements in Clutches; and I hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to. which it pertains tolmake and use the same.

This invention relates to improvements in clutches for controlling the operative connection between a driving-wheel or rotary mem- 1 ber and the shaft upon-which the said rotary member is loosely mounted.

One object of this invention is to provide an improved clutch especially well adapted for use in establishing and interrupting. oper- 2o. ative connection between a wheel or'rot'ary member and a shaft at short intervals of time.

Another object is to provide a clutch which issimple and durable in construction and ef- .25 ficient and reliable and comparatively noiseless in its operation. Y

Another object of thisinventi'on is to pro vide a clutch "which is self-lubricating and participates in the lubrication of the oppos- 0 .ing surfaces of theshaft and the interior of the hub of the wheelorrotary member from which power is .tobe transmitted to the shaft.

.With these objects in view and to the end of realizing other advantages'hei einafter ap 3 5 pearing this inventionconsists in certain features ofv construction and combinations of parts hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation illustrating an end portion of a shaft, .a driving-wheel loosely mounted .u on the shaft, and my improvedclutch em poyed in controlling operative connection etween the said wheel and the shaft. Fig. 5.. 2 is'an elevation, largely in section, on line 2 2, Fig.. 1, looking'in the direction indicated by the arrow. Fig. 2 is drawn on a larger scale than Fig. 1. Fig. 3 is a side elevation, largely in section, on line 3 3, Fig. 2, looking in the direction indicated by the arrow and illustrating the aforesaid end portion of' the shaft, the wheel mounted on the shaft, and

the clutch instrumental in controlling operative connection between the said wheel and 3 to reduce the size of the draw'ingand to more clearly show the construction. Fig. 4

is a transverse vertical section on line 4 4, Fig. 3, looking in the direction indicated by the arrow. Fig. 5 is a transverse vertical section on line 55, Fi 3, looking in the di rection indicated by t e arrow. Fig. 6 is a horizontal secton'on line 6 6, Fig. 3, looking in the direction indicated by the arrow. Fig.

:7 is a transverse vertical section on line 7 7, z Fig. 3, looking in the direction indicated by the arrow. Fig. 8 is a side elevation, largely in'section, largely corresponding so far as :concerns the subject-matter thereby illustrated with Fig. .3, except that in Fig. 8 .the Ekey-forming endwise-shiftable bars G and H :of the clutch are shown in their operative ,position,whereas in Fig. 3 the said bars are shown in their inoperative position.

, Referring to the drawings, A designates a horizontally-arranged shaft which has bearing in a standard B and extends a suitable distance beyond the outer side I) of the said standard, as shown in Figs. 1 and 3.. A driving-wheel C, to which power is to be transmitted in any approved 'manner, is loosely mounted on the shaft A a short distance from the said side I) of the standardB, having its hub cloosely embracing the shaft A, which extends through the bore D in the hub. The hub c is provided interiorly and in its end face which is opposite and adjacent to [the standard B with an annular recess d, :which form an annular enlargement of the bore, D, as shown in Fig. 3, and is arranged to 90 {accommodate the location of a collar E, formed upon and integral with the shaft A and'arranged within the inner end of the hub 10. The collar E therefore prevents .d'is lacement of the wheel 0 endwise of thesha A in the direction of the said collar or toward'the standard B, and a collar. F, mounted on and afixed to the shaft at the opposite end of the Isai'd'hub, prevents displacement of the wheel,

C endwise of the shaft inthe opposite direcioo Ways g and h extend, longitudinally of the shaft. The ways 9 and h are parallel with to 5 the axiallineof'the shaft and are arranged diametrically opposite. Two endwise-shiftiable bars G and H are arranged within and extend longitudinally of the ways (7 and h, re-

spectively. The hub c is provided in one no end face thereof with the annular bore en- 1 that the said collar embraces said heads so as largement d, as already indicated, and is provided in its opposite end face, as shown in Figs. 3, 7, and 8, with two recesses k, which are arranged diametrically opposite and connect and communicate with the bore D. The recesses 7c are open at their outer ends. Guideways J are formed in the lastmentioned face of the hub and arranged concentrically of the shaft. The guideways J communicate at one end with the diflerent recesses k, respectively, at one side of the re spective recess and are deepest where they open into the respective recess and gradually reduced in depth toward their opposite end, as shown in Figs. 3 and 6. Both guideways J extend from the connected recesses 7c in the direction in which the shaft A is rotated, and consequently in the same direction circumferentially of the shaft, and are uniform in width from end to end, as shown in Figs. 4 and 7. The bars G and H are provided with key-forming heads or members K, having the dimensions and arrangement required to render them capable of entering the recesses k during the rotation of the wheel C and of being guided into the said recesses by the guideways J.

The shaft A is somewhat reduced diametrically at the guideway-containing end of the hub c to form an annular shoulder f on the said shaft, and the collar F abuts at its inner end against the said shoulder.

The collar F, as shown in Figs. 3 and 6, is provided interiorly with two slots L, which extend endwise through the collar and are arranged diametrically opposite. The slots L form slideways for the heads K of the bars G and H and are therefore arranged diametrically opposite. The heads K are long enough to engage the slideways L in both positions of the said bars. The bars G and H are in their operative position when they have been actuated in the direction and to the extent required to bring their heads K into engagement with the recesses 7c, as shown in Fig. 8,

in which position the said heads K establish operative connection between the wheel C and the-shaft A. The bars G and H are in their inoperative position when they have been actuated in the direction and to the extent required to entirely disengage their heads K from the recesses k, as shown in Fi 3.

The collar F is preferably operatively connected with the shaft A by the well-known means of groove and feather, as at Z, as shown in Figs. 4 and\6, and preferably said collar is also fixed to the shaft by a set-screw M,which extends into engagement with the shaft through a correspondingly-screwthreaded hole m,with which the said collar is provided.

By the construction hereinbefore described it will be observed that the collar F affords adequate lateral bearing to the heads K and to prevent displacement of the heads outwardly from the shaft.

The heads K, as shown in Figs. 3 and 8, extend through the collar F and a suitable distance beyond the outer end of the said collar. Each head K is provided at its outer end with a stud p, which projects longitudinally and outwardly from and is arranged centrally of the outer end of the said head. The studs 1) of the heads K of the bars G and H are parallel and arranged at diametrically opposite sides, respectively, of the shaft A.

A sleeve P is loosely mounted on the shaft A at the outer end of the heads K. The studs p extend through holes 13, formed in the sleeve P. It will be observed, therefore, that the sleeve P embraces the inner end portions of the studs The sleeve P abuts against the outer en faces 12 of the heads K at the inner extremities of the studs 1), which extend a suitable distance beyond the outer end of the said sleeve, and the outer end portions of the studs 2) are screw-threaded, and correspondingly-threaded nuts 0 are mounted upon the said outer end portions of the studs and arranged to hold the sleeve P against the aforesaid outer end faces of the heads K. It will be observed, therefore, that the sleeve P is operatively connected with the bars G and H at the heads K of the said bars, and obviously both bars G and H are actuated endwise simultaneously durin the actuation of the said sleeve endwise of the shaft.

The way h extends longitudinally of the shaft A beyond opposite ends of the hub c, and the barH extends into and through a slot 6, which is formed in and extends endwise through the collar E to accommodate the lo cation and operation of the said bar. The ways 9 and h are of course long enough to accommodate the location and operation of the bars G and H, and the said bars extend in their operative position approximately from end to end of the said ways, as shownin Fig. 8.

The bar H terminates within the slot 0 in a head I, which in the operative position of the said bar H, as shown in Fig. 8, is arranged in the main outside of the collar E.

The means employedfor actuating the bars G and H from their operative position (shown in Fig. 8) to their inoperative position (shown in Fig. 3) comprises, preferably, a rock-arm T, which, as shown in Figs. 1 and 2, is arranged to operate between the hub c and the standard B. The arm T is pivoted, as at t, to the standard B horizontally and longitudinally of and in suitable proximity to the shaft A. The arm T is therefore capable of being swung in a vertical plane. The arm T is provided at its free end with an incline i, which is arranged to face the outer end of the head of the bar H and slopes away from the said end of the said head in the direction of the standard B, as shown in Fig. l.

The arrangement of the parts is such that the rock-arm T in its outwardly-swung or inoperative position is arranged outside of the path of the head L as shown in dotted lines, Fig. 2, and in solid lines, Fig. 8; that the said head is arran ed in the main within the slot e of the co lar E when the bars G and H are injtheir inoperative position,-

(shown in Fig 3 that the rock-arm T is in its inwardlyswung or operative position, as

shown in Figs. 1, 2, and 3, when the bars G and H are in their ino during the rotation o erative position; that the shaft A with the wheel Cwhen the bars G and H are in their opo. erative connection between the shaftA and The mechanism employed for operating the arm- T comprises, preferably, a togglejoint S, which, as shown in Figs. 1 and-2, is arranged uprightly below the said arms The upper link of the toggle-joint is operatively attached to the arm T between the axis and the incline of the said arm, and the lower link of the said joint is pivoted, as at s, to the standard B. The toggle-joint S is operatively connected at or near itsjknuckle by a rod uwith a bell-crank U, which is supported from the standard B.

The collar F is provided in its outer end and externally with an annular recess 1',- which is snugly engaged by the inner end of a shell or casing R, which surrounds the sleeve P and incloses the outer ends of the heads K, the nuts 0 and the hereinafteredescribed means acting to retain the bars G and H in their operative position.

The casing or shell R snugly embraces the shaft A at the outer end of the sleeve P and, as shown in Figs. 3 and 6, is fixed to the shaft by set-screwsV, which extend into engagement with the shaft. through correspondinglyscrew-threaded holes t, formed in the said shell or casing. v

The casing or shell R is recessed,'as at w, to accommodate the location of the outer end portions of the studs 1) and the nuts o on the said studs in the inoperative position of the bars Gand H.

The means employed for shifting the bars G and H from their inoperative into theiroperative position is preferably the means-acting to'retain the said bars in their operative position and comprises, preferably, spiral springs W, interposed between opposing surfaces of the sleeve P and the shellor casing R from within recesses 14, formed in the outer in the shell or casing R. The springs W are under tension when the bars G and H are in their inoperative position, as shown in Fig. 3, and obv1ously When the rock-arm T'is actuated from its operative position (shown in- Fig. 3) into its inoperative position(shown in Fig. 8) to release the bar H operate to ac tuate thebars G and H into their operative position. (Shown in Fig. 8.)

By the construction hereinbefore described it will be observed that the collar F and the .shell or casing R form a dust-guard which excludes dust and dirt from the keyforming heads K of the bars G and H. It will be observed also that the shell or casing Rforms a reservoir for the rece tion of a lubricating liquid and is provide at any suitable point with a screw-threaded chargingaperture 16, which is closed bya correspondingly-screwthreaded removable plug 17. It is obvious that any lubricating liquid contained within the said reservoir will creep or find in ress along theheads K into the recesses "and into the guideways J and into the inner end of the way 9 when the bars G ends of the sleeve P, into recesses 15, formed and H are in their inoperative position.- b

The bar Gis shorter than the bar H and terminates at its inner end about centrally between the ends of the hub c and the inner end portion of the Way is arranged centrally between the ends of the said hub and in the inoperative position of the bar G forms a pocket for the reception of lubricant, and obviously the actuation of the bars G and H from their lnoperative into their operative position when the recesses 16, guideways J and aforesaid pocket are supplied with lubricating liquid forces lubricatlng liquid from the said recesses, guideways, and pocket along and over the bearing forming opposing surfaces of the said hub and the shaft 0.

To facilitate the passage of any lubricating- I liquid from within the reservoir formed by the shell or casing R to the recesses k and guideways J, the collarF is provided, preferably in closeproximity to the heads K of the bars. G and H, with ports or passage-ways 18,

-' which extend endwise through the said collar and are arranged to feed lubricating liquid to the said guideways, and consequently to the said recesses.

It will be observed tha t-the wheel 0 is during its operation rotated in the, direction in which the guideways J increase in depth, andthat the key-forming heads K of'the barsG and H in actuating the said bars from theirinoperative into their operative position will directly enter the recesses 7c or enter the said recesses through the guideways J, according as the said recesses or the said guideways are cess k that is, that side wall of the said re IIO .atthe time of rendering the said barsoperacess which faces the adjacent end of the connected guideway Jis formed by a wearplate -00, as shown more clearly in Fig 7, which plate is secured in place by a screw y, whose shank extends into engagement with a correspondingly-threaded hole 20, formed in the said plate, through a hole 22, formed in the hub c, and has its head abutting the inner end wall of the enlargement of the outer end of the said hole 22.

I would also remark that the oil within the recesses 7c and guideways J cushions the heads K of the bars G and H in the actuation of the said bars from their inoperative position into their operative position, and consequently objectionable noise in the said actuation of the said bars is avoided.

What I claim is 1. The combination, with a shaft provided, in its periphery, with a groove or way extending longitudinally of and parallel with the axial line of the shaft, and a wheel or rotary member having a hub loosely mounted on the shaft and provided in one end face of the hub, with a recess which connects and communicates with the bore in the hub and is open at its outer end, and a guideway formed in the said face and extending circumferentially of the shaft and opening at one end thereof into the said recess at one side of the recess and gradually reduced in depth toward the opposite end of the recess, which hub is provided, in its opposite end face and interiorly, with an annular recess which forms an annular enlargement of the aforesaid bore, of an endwise-shiftable bar engaging and extending longitudinally of the peripheral way in the hub and extending from end to end of the bore in the hub, which bar, at one end, has a key-forming head arranged to engage the aforesaid recess and is provided, at its opposite end, with a head arranged to engage the aforesaid annular bore enlargement; means for exerting pressure against the outer end of the last-mentioned head to actuate the bar endwise in one direction, and means for actu ating the bar endwise in the opposite direction, and the aforesaid way in the shaft being long enough to accommodate the location and operation of the said bar, and the arrangement of the parts being such that the keyforming head of the bar shall engage the aforesaid recess, or the other head of the bar shall engage the aforesaid bore enlargement, according as the bar is in the one or the other of its positions.

2. The combination, with a shaft provided, in its periphery, with a groove or way extending longitudinally of and parallel with the axial line of the shaft, and a wheel or rotary member having a hub loosely mounted on the shaft and provided, interiorly and at one end face of the hub, with a recess which connects with the bore in the hub and is open at the said face, which hub is provided, in its more opposite end face and interiorly, with an inn nular recess which forms an annular enlargement of the aforesaid bore, of an endwiseshiftable bar engaging and extending longitudinally of the peripheral way in the hub and extending from end to end of the bore in the hub, which bar, at one end, has a key-forming head arranged to engage the aforesaid recess and is provided, at its opposite end, with a head arranged to engage the aforesaid annular bore enlargement; means for exerting pressure against the outer end of the lastmentioned head to actuate the bar endwise in one direction; and means for actuating the bar in the opposite direction, and the aforesaid way in the shaft being long enough to accommodate the location and operation of the said bar, and the arrangement of the parts being such that the key-forming head of the bar shall engage the aforesaid recess, or the other head of the bar shall engage the aforesaid bore enlargement, according as the bar is in the one or the other of its positions.

3. The combination, with a shaft provided, in its periphery, with a groove or way extending longitudinally of and parallel with the axial line of the shaft, and a wheel or rotary member having a hub loosely mounted on the shaft and provided, in one end face of the hub, with a recess which connects and communicates with the bore in the hub and is open at its outer end, which hub is provided, in its opposite end face and interiorly, with an annular recess which forms an annular enlargement of the aforesaid bore, of an endwise-shiftable bar engaging and extending longitudinally of the peripheral way in the hub, which bar at one end, has a key-forming head arranged to engage the aforesaid recess and is provided, at its opposite end, with a head arranged to engage the aforesaid annular bore enlargement; means for exerting pressure against the outer end of the last mentioned head to actuate the bar in the di rection required to render the key-forming head of the bar inoperative; means acting to shift the said bar endwise in the direction required to establish engagement between the key-forming head and the aforesaid recess and thereby render the said key-forming head operative, and the aforesaid way in the shaft being long enough to accommodate the location and operation of the said bar, and the arrangement of the parts being such that the key-forming head of the bar shall engage the aforesaid recess, or the other head of the said bar shall engage the aforesaid bore enlargement, according as the bar is in the one or the other of its positions.

4. The combination, with a shaft provided, in its periphery, with a groove or way extending longitudinally of and parallel with the axial line of the shaft, and a wheel or rotary member having a hub loosely mounted on the shaft and provided, in one end face of the hub, with a recess which connects and communicates with the bore in the hub and is open at its outer end, which hub is provided, inits opposite end face andnteriorly, with an annular recess which forms an annular enlargement of the aforesaid bore, of an end- Wise-shiftable bar engaging and extending longitudinally of'the peripheral way in the hub and terminating, at one end, in a keyforming member arranged to engage the aforesaid recess, which bar is provided, at its required to establish engagement between the key-forming member and the aforesaid recess and thereby render the said key-forming member operative, and the aforesaid way in the shaft being lon enough to accommodate the location an operation of the said bar, and the varra ngement'of the parts being such that the key-forming membershall engage the aforesaid recess, or the aforesaid head shall engage the aforesaid bore enlargement, according as the bar is in the one or the other of its positions.

5. The combination, with a shaft. provided, in its periphery, with-a groove or way extending-longitudinally of the shaft, and a wheel or rotary member having a hub loosely mounted on the shaft and provided, in one end face thereof, with a recess which connects and communicates with the bore in the hub and is open at its outer end, and the shaft extending outwardly beyond the said face of the hub, of an endwise-shiftable bar, engaging and extending longitudinally of the peripheral way in the huband provided with a key-forminghead or member; which is arran ed to engage the aforesaid recess and extends outwardly beyond the aforesaid'face of the hub, which bar is in it's operative position when the said key-forming member engages the said recess; means acting to retain the said bar in its operative position, a dustguard-forming shell surrounding the shaft next adjacent the aforesaid face of the hub and comprising a collar operatively mounted upon the shaft and abutting against the aforesaid'shoulder, which collaris provided with a slideway for the aforesaid key-forming member.

6. The combination, with a shaft provided, in itsperiphery, with a groove or way extend ing longitudinally of the shaft, and a wheel or rotary member having a hub loosely mounted on the shaft and provided, in one end face of the hub, with a recess'which connects and communicates with the bore in the hub and is open at its outer end, and the shaft extending outwardly beyond the said nally of the hub, which bar is in its in its periphery, ling longitudinally'of the shaft, and a Wheel mounted on the shaft and face of the hub, of an endwise-shiftable bar engaging and extending longitudinally of the peripheral way in the hub and provided with a key-forming member which is arranged to engage the aforesaid recess during the rota= tion of the aforesaid loosely-mounted rotary ,member and extends outwardly beyond the I aforesaid face of the hub, which bar is in its operative position when the said key-forming member engages the said recess; means for o crating the said bar; areservoir-forming s ell surrounding the shaft adjacent the aforesaid face of the hub and comprising a collar fixed upon the shaft at the inner end of the reservoir, which collar is provided with a portor passage-way establishing communij cation between the interior chamber of the said shell and the aforesaid recess.

7. The combination, with a shaft provided, in its periphery, with a groove or way extending longitudinally of the shaft, and a wheel or rotary member having a hub loosely mounted on the shaft and provided, in one end face of the hub, with a recess which connects and communicates with the bore in the huband is open at its outer end, and 'the shaft extending outwardly beyond the said "face of the hub and reduced diametricall'y, at the said face, to form an annular shoulder upon the shaft, of an endwise-shiftable b'ar engaging and extending longitudiperipheral way in the hub and" provided with a key-forming head or mem- 1 ber which is .recess during the rotation loosely-mountedrotary member and extends arranged to engage the aforesaid o the aforesaid outwardly beyond the aforesaid face .of the operative position when the said key-forming member engages the said recess means for operating the said bar a reservoir-forming shell surrounding the shaft next adjacent the aforesaid face of ,the hub and comprising a collar fixed upon the shaft and abutting against the aforesaid shoulder, which collar is provided with a port or passage-way establishing communication between the interior chamber of the said shell and the aforesaid recess. 8; The combination,.with a shaft provided,

with a groove or way extendor rotary member having ahub loosely I provided, in one end face thereof, with a recess which connects and communicates with the bore in the hub and is open at its outer end, which hub is provided, in its opposite end face and interiorly, with an annular enlargement of the aforesaid bore, of anendwise-shiftable bar engagin and extending longitudinally of the perip eral way in the hub and extending from end to end of the bore in the hub, which bar has, at one end, a key-forming member adapted to engage with the aforesaid recess and is rovided, at its oppositeend with a hea arranged to engage the aforesaid annular bore enlargement; means acting to shift the said bar endwise in the direction required to establish engagement between,the key-forming member and the aforesaid recess, and means for engaging the aforesaid head and actuating the said bar endwise in the opposite direction.

i 9. The combination, with a shaft provided, in its periphery, with a groove or way extending longitudinally of the shaft, and a wheel or rotary member having a hub loosely mounted on the shaft and provided, in one end face thereof, with a recess which connects and communicates with the bore in the hub and is open at its outer end, which hub is provided, in its opposite end face and interiorly, with an annular enlargement of the aforesaid bore, of an endwise-shiftable bar engaging and extending longitudinally of the peripheral way in the hub and extending from end to end of the bore in the hub, whichbarhas, at one end, a key-formi ng member adapted to engage with the aforesaid recess and is provided, at its opposite end, with a head arranged to engage the aforesaid annular bore enlargement means acting to shift the said bar endwise in the direction required to establish engagement between the key-forming member and the aforesaid recess, and a movable incline for exerting pressure against the outer end of the aforesaid head.

10. The combination, with a shaft provided, in its periphery, with a groove or way extending longitudinally of the shaft, and a wheel or rotary member having a hub loosely mounted on the shaft and provided, in one end face thereof, with a recess which connects and communicates with the bore in the hub and is open at its outer end, which hub is provided, in its opposite end face and interiorly, with an annular enlargement of the aforesaid bore, of an endwise-shiftable bar engaging and extending longitudinally of the peripheral way in the hub, which bar has, at one end, a key-forming member adapted to engage with the aforesaid recess and is provided, at its opposite end, with a head arranged to engage the aforesaid annular bore enlargement; means acting to shift the said bar endwise in the direction required to establish engagement between the key-forming member and the aforesaid recess; a pivotallysupported arm having an incline exerting pressure against or being out of engagement with the outer end of the aforesaid head according as the arm is in the one or the other of its two positions, and mechanism for actuating the said arm.

1] The combination, with a shaft provided in its periphery with grooves or waves extending longitudinally of the shaft, and a wheel or rotary member having a hub loosely mounted on the shaft and provided, in one end face thereof, with recesses connecting and communicating with the bore in the hub and open at their outer ends, which recesses are arranged to render them capable of simul taneously registering with the different aforesaid ways respectively, and the shaft extending outwardly beyond the aforesaid face of the hub and reduced diametrically at the said face to form an annular shoulder upon the shaft, of endwise-shiftable bars engaging and extending longitudinally of the peripheral ways in the hub and provided with keyforming heads or members arranged to engage with the aforesaid recesses and extending outwardly beyond the aforesaid face of the hub, which bars are in their operative position when their key-forming members engage the aforesaid recesses; means for shifting the said bars from their inoperative into their operative position; means for actuating the said bars from their operative position into their inoperative position, and a reservoir-forming casing surrounding the shaft next adjacent the aforesaid face of the hub and comprising a collar fixed upon the shaft and abutting against the aforesaid shoulder, which collar is provided with slideways engaged by the aforesaid key-forming members, and passageways arranged to feed oil from the interior chamber of the said casing to the aforesaid recesses.

12. The combination, with a shaft provided in its periphery with two grooves or ways extending longitudinally of the shaft and arranged diametrically opposite each other, and a wheel or rotary member having a hub loosely mounted on the shaft and provided, in one end face thereof, with two diametrically opposite recesses connecting and communicating with the bore in the hub and open at their outer ends, and one of the aforesaid ways extending beyond opposite ends of the hub, and the other of the said. Ways terminating at one end centrally between the ends of the hub, of tWo bars engaging and. shiftable endwise of the different aforesaid ways respectively and provided each with a key-forming head or member for engaging with the one or the other of the aforesaid recesses, which bars are in their operative position when their key-forming members engage the aforesaid recesses; means for shifting the said bars simultaneously from their inoperative into their operative position; means for actuating the said bars simultaneously from their operative position into their inoperative position, and means for feeding lubricating liquid to the aforesaid recesses.

13. The combination, with a shaft provided in its periphery with grooves or ways extending longitudinally of the shaft, and a Wheel or rotary member having a hub loosely mounted on the shaft and provided, in one end face thereof, with recesses connecting and communicating with the bore in the hub and open at their outer ends, which recesses are arranged to render them capable of regisand sition and provided, at their outer ends, with studs projecting longitudinally and outwardly from the said key-forming members; a sleeve slidably mounted onthe shaft and embracing the said studs;.nuts on the studs [5' at the outer end of the sleeve; a casing surrounding the sleeve and mounted on and fixed to the shaft at the outer end of the sleeve; meansinterposed between the outer v and end-face of the sleeve and the opposing surface of the casing and acting to retain the aforesaid bars in their operative osition; means for actuatingthe said bars om their operative into their inoperative position, and a collar operatively mounted on the shaft and inter- I posed between the inner end of the said'casing and the aforesaid hub, which collar has slideways engaged by the aforesaid key-forming members: Y

14. The combination,

u and communicating with the bore in the hub and open attheir outer ends, which recesses are arranged to render them capable of registering with the different aforesaid ways respectively, and the shaft extending outwardly beyond the aforesaid face of the hub, of endwise-shiftable bars engaging and extending longitudinally of the aforesaid ways rovided with keyforming heads or mem ers engaging or out of engagement with the aforesaid recesses according as the bars are in their operative or inoperative position, which key-forming members are provided, at

their outer ends, with studsprojecting longitudinally and outwardly from the said keyforming members; a sleeve slidably mounted on the shaft and embracing the said studs, which sleeve has recesses in its outer end face; nutson the studs at the outer endof the sleeve; a casing surrounding the sleeve and mounted on and fixed to the shaft at the outer end of the sleeve and provided-with recesses opposite the-recesses in the sleeve spiral springs extending from within the recesses in the sleeve into the recesses in the said casing and under tension in the inoperative position of the aforesaid bars, and means for actuating the said bars from their operative into their inoperative position.

15. The combination, with a shaft provided in its periphery with grooves or.ways

end face thereof, with recesses with a shaft-pro vided in its, periphery with grooves or ways extending longitudinally of the shaft, and a wheel orrotary member having a hub loosely mounted on the shaft and provided, in one connecting and communicating with the bore in the hub and open at their-outer ends, which recesses are arranged to render them capable of si" multaneously registering with the difierent aforesaidways respectively, and the shaft extendlng outwardly beyond the aforesaid face of the hub, of endwise-shiftable bars engaging and extending longitudinally of the aforesaid ways and provided with key-forming heads or members enga ing or out of engagement with the aforesai recesses accord ing as the bars are in their operative or inoperative position; a sleeve slidably mounted on the shaft and operatively connected with the aforesaid bars; a casing surrounding the sleeve and mounted on and fixed to the shaft at the outer end of the sleeve; means interposed between the outer end face of the sleeve and the opposing surface of the said casing and acting to retain the sleeve in its inner position, and means for actuating the aforesaid bars from their operative into their inoperative position.

16. The combination, with a shaft pro vided in its periphery with grooves or ways extending longitudinally of the shaft, and a. wheel or rotary member having a hub loosely mounted on theishaft and provided, in one end face thereof, with recesses connecting and communicating with the bore in the hub and open at their outer ends, which recesses are arranged to render them ca able of simultaneously registering with tffe different aforesaid ways respectively, and the shaft extending outwardly beyond the aforesaid face of the hub, of endwise-shiftable bars engagingand extending longitudinally of the aforesaid ways and provided with key-forming heads engaging or out 'of engagement withthe aforesaid recesses according as the bars are in their operative or inoperative position a. sleeve slidably mounted on the shaft and operatively connected'with the said bars;

a casing surrounding the sleeve and mounted on and fixed to the shaft at the outer end of thesleeve; means for actuating the sleeve endwise in the direction. required to shift the aforesaid bars from their inoperative position into their 0 erative position, and means for actuating tlib said bars from their operative into their inoperative position.

17'. The combination, with a shaft provided in its periphery with agroove or way extending longitudinally of the shaft, and a wheel or rotary member having a hub loosely mounted on the shaft and provided with a recess connecting and communicating with the bore in the hub, of an endwise-shiftable bar engaging and extending longitudinally of the aforesaid way and provide with a keyfOrming head engaging or out of engagement I'IO with the aforesaid recess according as the bar is in its operative or inoperative position; a member slidable longitudinally of the shaft and operatively connected with the said bar; a casing containing the said slidable member and surrounding and supported from the shaft; means for actuating the said slidable member endwise in the direction required to shift the aforesaid bar from its inoperative position into its operative position, and means for actuating the said bar from its operative into its inoperative position.

18. The combination, with a shaft provided in its periphery with a groove or way extending longitudinally of the shaft, and a Wheel or rotary member having a hub loosely mounted on the shaft and provided with a recess connecting and communicating with the bore in the hub, of a bar engaging and shiftable endwise of the aforesaid way and provided with a key-forming head or member for engaging with the aforesaid recess, which bar is in its operative position when its keyforming member engages the aforesaid recess; means for shifting the said bar from its inoperative into its operative position; means for actuating the said bar from its operative into its inoperative position, and means for feeding lubricating liquid to the aforesaid recess.

19. The combination, with a shaft provided in its periphery with a groove or way extending longitudinally of the shaft, and a wheel or rotary member having a hub loosely mounted on the shaft and provided with a recess connecting and communicating with the bore in the hub, which recess is arranged to register with the aforesaid way, and the shaft extending outwardly beyond a face of the hub and reduced diametrically at the said face to form an annular shoulder upon the shaft, of an endwise-shiftable bar engaging and extending longitudinally of the peripheral way in the hub and provided with a keyforming head or member arranged to engage with the aforesaid recess and extending outwardly beyond the aforesaid face of the hub, which bar is in its operative position when the key-forming member of the bar engages the aforesaid recess; means for shifting the said bar from its inoperative into its operative position; means for actuating the said bar from its operative position into its inoperative position, and a reservoir-forming casing surrounding the shaft next adjacent the aforesaid face of the hub and comprising a collar on the shaft and arranged next the aforesaid shoulder, which collar is provided with a slideway engaged by the aforesaidkeyforming member, and a port or passage-way arranged to feed oil from the interior chamber of the said casing to the aforesaid recess.

20. The combination, with a shaft provided, in its periphery, with a groove or way extending longitudinally of the shaft, and a wheel or rotary member having a hub loosely mounted on the shaft and provided with a recess which connects and communicates with the bore in the hub, of an endwise-shiftable bar engaging and extending longitudinally of the peripheral way in the hub, which bar has a key-forming member adapted to engage with the aforesaid recess and is also provided with a head; means acting to shift the said bar endwise in the direction required to establish engagement between the key-forming member and the aforesaid recess; a niovable member having an incline exerting pressure against or being out of engagement with the outer end of the aforesaid head according as the said incline-forming member is in the one or the other of its two positions, and mechanism for actuating the said inclineforming member.

21. The combination, with a shaft provided, in its periphery, with a groove or way extending longitudinally of the shaft, and a wheel or rotary member having a hub loosely mounted on the shaft and provided with a recess which connects and communicates with the bore in the hub, of an endwise-shiftable bar engaging and extending longitudinally of the peripheral way in the hub and extending from end to end of the bore in the hub, which bar has a key-forming member adapted to engage with the aforesaid recess and is also provided with a head a suitable distance from the key forming member; means acting to shift the said bar endwise in the direction required to establish engagement between the key-forming member and the aforesaid recess, and means for engaging the aforesaid head and actuating the said bar endwise in the opposite direction.

22. The combination, with a shaft provided, in its periphery, with a groove or way extending longitudinally of the shaft, and a wheel or rotary member having a hub loosely mounted on the shaft and provided with a recess whichconnects and communicates with the bore in the hub, and the shaft extending outwardly beyond a face'of the hub, of an endwise-shiftable bar engaging and extending longitudinally of the peripheral way in the hub and provided with a key-forming member which is arranged to engage the aforesaid recess during the rotation of the aforesaid loosely mounted rotary member and extends outwardly beyond the aforesaid face of the hub, which bar is in its operative position when the said key-forming member engages the said recess; means for operating the said bar a reservoir-forming shell surrounding the shaft adjacent the aforesaid face of the hub and comprising a collar mounted on the shaft at the inner end of the reservoir, which collar is provided with a port or passage-way establishing communication between the interior chamber of the said shell and the aforesaid recess.

23. The combination, with a shaft pro-. vided in its periphery with a groove or way extending longitudinally of the shaft, and a wheel or rotary member having a hub loosely mounted on the shaft and provided with a recess which connects and communicates with the bore in the hub and the shaft extending outwardly beyond 'a face of the hub, of an endwise-shiftable bar engaging and extending longitudinally of the peripheral way in the hub andprovided with a key-forming head or member which is arranged to engage the'aforesaid recess and extends outwardly beyond the aforesaid face of the hub, which bar is in its operative position when the said key-forming member engages the said recess; means acting to retain the saidbar in its operative position, a dust-guard-forming shell surrounding the shaft-adjacent the aforesaid face of the hub and comprising a collar mounted-on the shaft, which collar is provided with a slideway for the aforesaid keyforming member.

24. The combination, with a shaft pro with a groove or way extending longitudinally of the shaft, and a wheel'or rotary member having a hub'loosely i vided, in its periphery,

mounted on the shaft and provided with a recess which connects and communicates with the bore in the hub, of an endwise-shiftable bar engaging and extending longitudinally of the peripheral way in the hub and having a key-forming member arranged to engage the aforesaid recess; means for operatively' engaging the said bar and thereby actuating the bar endwise in the direction required to render the key-forming member of the bar inoperative; means for actuating the said bar endwise in the direction required to establish engagementv between the key-forming member and the aforesaid recess and thereby render the said key-forming member operative,an'd the aforesaid way in the shaft being long enough to accommodate the location and operation of the said bar.

In testimony whereof I sign the foregoing specification ,inthe presence of two witnesses, this 12th day of May, 1903, at Cleveland, Ohio.

GEORGE W. GREENWOOD.

Witnesses:

O. H. DORER, TELSA SCHWARTZ. 

